I have been to Aki on West 4th( 181 West 4th Street, off of 6th ave, 212-989-5440) two times in the last six months and both times have eaten fantastic meals. It is a very small place with six seats at the sushi bar and 4 tables of two. The owner/chef Siggy is behind the sushi bar with one other person, and his wife works the tables. Both times we have eaten at the sushi bar and ordered Omakase. Aki has a few different Omakase meals ranging from $35 - $55. Each meal receives a different amount of dishes before a sushi platter.
Now I have to admit that I never had Omakase until a recent trip to Tojo's in Vancouver for what was one of the best meals I have ever eaten. Aki is not Tojo's, but in my opinion it's not far off. My friend and I on both trips have ordered the package where you get five dishes before the sushi platter. The great thing at Aki is that Siggy will make ten different dishes that both can share, instead of each person getting the same thing. So far, I have not had a dish that I didn't really enjoy. He serves a great mixture of hot and cold dishes, all contain wonderful combinations that always seem to compliment each other. Everything, including the sushi, always tastes so fresh. Both times we have ordered as additions pieces of sea urchin and double fatty tuna which were incredible. I think dessert is included with the Omakase, and while on our first visit I was not eager to order any, Siggy's wife insisted I try the Green Tea Tiramisu. I was pleasantly suprised.
Since the place is small, I reccomend calling to see if you need reservations. The two times I have gone we made reservations at the sushi bar and it has been busy. Finally, Siggy told us that on January 1,2 and 3, he is making fifty special Japanese dishes, with a prix fix that will include twenty small dishes each day. He told us that if we were interested to make sure we make reservations.